Pietro Mascagni | Pietro Bembo | Pietro da Cortona | Ponte San Pietro | The Battle of San Pietro | Pietro Tacca | Pietro Perugino | Pietro Canonica | Pietro Annigoni | San Pietro in Casale | Pietro Tenerani | Pietro Tagliavia | Pietro Frua | Pietro Consagra | San Pietro in Ciel d'Oro | Pietro Verri | Pietro Scalia | Pietro Lombardi | Pietro Gori | Pietro Delitala | Pietro de' Crescenzi | Pietro Badoglio | Pietro Paolo Cristofari | Pietro Nobile | Pietro Musumeci | Pietro IV Candiano | Pietro Garinei | Pietro Della Valle | Pietro Cascella | Pietro Aretino |
Diego's customers have included Supreme Court Justices Warren E. Burger and William Rehnquist, Israeli Prime Minister Benjamin Netanyahu, former British Prime Minister John Major, Washington Archbishop Donald Wuerl, Apostolic Nuncio Pietro Sambi, former Italian ambassador Giovanni Castellaneta, Mayor Adrian Fenty, and members of the D.C. Council.
He succeeded Elden Francis Curtiss, and was installed at St. Cecilia Cathedral on July 22, 2009, by His Excellency, The Most Reverend Archbishop Pietro Sambi, the Apostolic Nuncio of the Holy See to the United States.